'Blue' in the Bible

Therefore, send me a craftsman who is skilled in engraving to work with gold, silver, bronze, and iron, and with purple, crimson, and blue yarn. He will work with the craftsmen who are with me in Judah and Jerusalem, appointed by my father David.

He is the son of a woman from the daughters of Dan. His father is a man of Tyre. He knows how to work with gold, silver, bronze, iron, stone, and wood, with purple, blue, crimson yarn, and fine linen. He knows how to do all kinds of engraving and to execute any design that may be given him. I have sent him to be with your craftsmen and the craftsmen of my lord, your father David.

He made the veil of blue, purple, and crimson yarn and fine linen, and he wove cherubim into it.